Old vintage office perpetual calendar leather base

Very chic and very beautiful old vintage office perpetual calendar leather base, art deco black leather, saddle stitch. Dimensions 18.5 cm X 10.5 cm. Very good condition, just a lack of leather has two years angle below see last photo. Works. Era 1930 - 1940 of very good quality, patina of use., just to clean.

Ref. : 8VYRWVWE